Feeding device for chaff cutting machines and the like



Jan. 1, 15 35. c ET AL 1,986,717

- FEEDING DEVICE FOR CHAFF CUTTING MACHINES AND THE LIKE Filed Nov. 12, 1930 2 Sheets-Sheet l Jan. 1, 1935.- EIRI CH ET AL 1,986,717

FEEDING DEVICE FOR CHAFF CUTTING MACHINES AND THE LIKE Filed Nov. '12, 19:50 2 Sheets-Sheet 2 Patented Jan. 1, I

. .11. .This invention relates to afe eding mechanism for. Hfodder-cutting machines and the like, in which two: endless. conveying bands are arranged in aframe one above the other and in which the slower. of ,the two conveying .bandsyiserigidly mounted invtheside lwallsoft the. machine frame anduthe upper conveying band is mounted ina. M pivoted bearing frame the interior ofthe ma-' chine frame casing of the mechanismso as to be movableflup and downrelative to the lower band. It is an object of the invention to-{ construct a feeding mechanism of the kind set forth, in which the upper conveyor band is mounted on a bearing frame whichis mountedat one end on pivots on the walls of the machine frame casing surrounding the mechanism in sucha manner that. the

said bearing framemayoscillate, whereby the variation in the thickness of the fodder willcause the bearing frame to raise and lower.

,is illustrated by way of example in the accom A form of construction of the conveying device panying drawings in which: i 1

' Fig. 1 is a vertical section through theconveying device on line 1.--1 of Fig. 2.

Fig. 2 is a top plan view partly in section on. line 22 of Fig. l.

Fig. 3 is a side elevation of the conveyingde- Fig. e is a Fig. 5 is anend view illustrating the connection between the driving gear and the endless bands.

The upper endless band, which in general is designated by A, is carriedby a bearing frame b which with the band as a whole oscillates at.

proximity to the pinion d, so that the upper band A is adapted to move tongs-like relative to the 1 lower band. The two carrying bolts take up a considerable portion of the weight of the bearing frame band of the band, so that this band oscillates easily up and down at the discharge end C. In order to prevent cut material dropping through the oblong holes e of the side walls and to proceed into the interior of the chain links, sealing discs f are mounted on the ,shaft 9 on the mouthpiece side C, which discs cover the oblong holes. e at any position of the band and prevent cut material passing through said holes. A straight-edged plate his rigidly fixed to two angular flaps hi of the oscillatable bearing frame I), said plateserving as a press plate. This plate does not extend ifenninelnnvron FORFCHAFFCUTTING. .QJMACHINES'AND THE. LIKE i a 'l al l d Io s pn Eirich, Hardheim,

j Application November 12,1930,seia 1 ,4

I fi rm nrNovemperis,19,29 p

outwardly as far as the mouthpiece plate he. i As the press plate h is furtherdistant from the two pivot bolts c'than the shaft g ofthe upper band A; it has a'longer stroke than the shaft g. The press plate h, rigidly fixed on the bearing frame,

UN T 'E PATENToF I obviously exerts a. greater pressure'on the string" A of fodder when this string is thin than when the same is thick. The press plate .71., representing so-to sayjan upper lip, which rests on and holds the thin string of fodder in the proximity of'the knife :blades, located closely adjacent the discharge end C of the feed mechanism in known mamier, so that the string of fodder cannot yield under the shifting cutting pressure of the knife. When the press plate-is ascending and when it is in its highestextreme position, the delivered string of fodder can slightly expand in upward direction. For breakable material, for instance dry wheat straw, clover hay, chips ofsugar cane,

wood chips or brushwood sticksthis reductionof pressure close to the knife is material if very short chaff has to be out, as this preferable reductionenables the string to be rapidly and uniformly delivered and further the production of a chaff of equal length, preventing the breaking of (the upper string portion and the vertical positioning of the upper layers of the string, which t H frequently happens at the moment when it is bevertical section on line 4-4 of Fig. 1.

ing discharged.

.In the form of construction shown and described, driving pinions it having six teeth are mounted inthe upper and lower endless bands A and m. By altering the diameter of these rollers i the band can betightly stretched. Two levers o,

keyed on the projecting. ends of the shaft 9 of the band A and carrying short, toothed arcshaped pieces on the end facing the mouthpiece and B. At their opposite ends the bands run over rollers i loosely rotating on the shafts g the ascending and descending movement of the band A the weight-loaded lever 20, which is fixed on the short lever o, is oscillated owing to the -meshing toothed are pieces 0 and 121. The shaft gztherefore carries out the same movement as the two toothed levers o. i i v The lower endless band B is not supported by a separate bearing frame but its shafts 7c and 'm are journaled in bores of the "side walls. Sliding bars n. for the carrying side of the endless band may be arranged directly on the side walls of the machine. The bearing frame b is fitted in the interior of the band A with sliding plates n for the lower and upper sides of the band.

The two bands A and B are driven by a spur wheel gearing. The driving spur wheel u is loosely mounted on the bolt 0 around which the bearing frame b oscillates and it meshes on the one hand with the spur wheel 1" on the driving shaft of the driving pinion d for the upper end less band A and drives on the other hand through the intermediary of an intermediate wheel s a spur wheel t on the shaftk of the pinion-d for the lower band B. I 7

We claim: I

1. A feeding mechanism comprising in combination a main frame, pivot bolts in the side Walls of said main frame, two endless bands one above the other, the lower band beingstation arily mounted in said main frame and the upper bandbeing movably mounted in said main frame,

a bearing frame for said upper endless band oscillatably mounted on said pivot bolts, a. driving pinion for each ofsaid endless bands, a driving gear on the shaft of one of said pinions for driving the latter, said driving gear meshing with a gear loosely mounted'on one of said pivot bo1ts, said loosely mounted gear meshing with intermediate gears adapted to drive the other driving pinion..

r 2. A feeding mechanism comprising in combio an? nation a main frame having side walls, an arcmentioned arc-shaped piece.

, :3LA feeding. mechanism comprising, a main;

name having enclosing walls, said frame being provided with elongated openings, a pair of endless feeding bands one above the other, the upper band being supported on a bearing frame, said bearing frame being rotatably mounted on pivots in the walls of the main frame, sealing discs adjacent the elongated openings in the main frame to closesaid openingssaid discs being movable with said bearing frame, said bearing framebeing pivoted to. a weighted lever, said lever being provided with an arcuate toothed end, and an arcuateitoothed rack on the main frame and em gaged with the toothed end of the lever,- whereby upon raising and lowering of the lever the upper band is oscillated I LUDWIG EIRICH.

J OSEPH EIRICH.

of said first- 

